WO2019153359A1 - 一种测量方法及装置 - Google Patents
一种测量方法及装置 Download PDFInfo
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- WO2019153359A1 WO2019153359A1 PCT/CN2018/076569 CN2018076569W WO2019153359A1 WO 2019153359 A1 WO2019153359 A1 WO 2019153359A1 CN 2018076569 W CN2018076569 W CN 2018076569W WO 2019153359 A1 WO2019153359 A1 WO 2019153359A1
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- cell
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- currently camped
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- 238000000691 measurement method Methods 0.000 title abstract description 36
- 238000005259 measurement Methods 0.000 claims abstract description 177
- 238000000034 method Methods 0.000 claims abstract description 71
- 238000004891 communication Methods 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 52
- 238000010586 diagram Methods 0.000 description 11
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- 230000006870 function Effects 0.000 description 8
- 230000011664 signaling Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
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- 238000004590 computer program Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Definitions
- the present application relates to the field of communications technologies, and in particular, to a measurement technique.
- LTE Long Term Evolution
- 5th Generation 5th-Generation, 5G
- communication signals are usually covered in the form of cells.
- a cell having a large communication signal coverage area may be referred to as a macro cell, and a cell having a small communication signal coverage area may be referred to as a small cell.
- the small cell and the macro cell may be deployed on different frequencies, or may be deployed on the same frequency.
- the terminal can select a cell by measuring signal quality of a cell on a different frequency.
- the threshold for broadcasting the measurement broadcasted or sent by the base station of the currently camped cell may be received, and the signal quality or signal power of the currently camped cell is measured to be less than
- the measurement of the neighboring cell of the currently camped cell is started.
- the threshold is low, the terminal cannot start the measurement of the neighboring cell in time, and thus the signal cannot be reselected in time. Better on the community. If the threshold is high, the timing at which the terminal starts the measurement is earlier, which increases the measurement power consumption of the terminal.
- the present application provides a measurement method, a device, and a computer storage medium.
- the technical solution is as follows:
- a measurement method comprising:
- the currently camped cell is measured to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , where N is the total number of times the currently camped cell is measured within ⁇ t, and S i is The amount of cell state obtained by the i-th measurement;
- S REF is updated such that S REF is equal to S N , S REF is The reference cell state quantity of the currently camped cell; wherein, if S REF -S i is greater than or equal to the first threshold, the neighboring cell of the currently camped cell is measured.
- the terminal when the terminal determines that the cell state quantity in ⁇ t is smaller than the reference cell state quantity, on the one hand, the terminal may start measurement on the neighboring cell, and on the other hand, the terminal may update S REF to ⁇ t.
- the last measured cell state quantity S N so that if the terminal fails to reselect to other cells after measuring the neighboring cell, the current camped cell can be measured again at ⁇ t based on the updated S REF Whether the amount of the cell state within the condition satisfies the condition, so as to determine whether to start the measurement of the neighboring cell again.
- the number of times the terminal measures the neighboring cell is reduced, and the power consumption of the terminal is reduced.
- the method further comprises: receiving information indicating the ⁇ t from the network device, or information indicating the first threshold.
- the method further includes: acquiring S REF after the cell reselects or selects the currently camped cell.
- the terminal may obtain the S REF from the network device, or may measure the cell state quantity of the currently camped cell at the moment of camping on the currently camped cell, and determine the measured cell state quantity as S REF . It may be that the cell state quantity of the currently camped cell of the latest (or most recent) measurement is determined as S REF before the time of camping on the currently camped cell.
- the cell state quantity includes a signal power RSRP or a signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the method further includes:
- the condition of the cell reselection may be that the coverage of the cell is greater than the coverage of the currently camped cell, and the signal quality or signal power of the cell is greater than the third threshold.
- the method further includes:
- a measurement report is sent to the network device, the measurement report including a signal quality RSRQ or a signal power RSRP of the one or more cells.
- the measurement report may be sent to the network device, so that the network device performs cell handover on the terminal according to the signal quality or signal power of one or more cells included in the measurement report.
- the method further includes:
- the coverage of the one or more cells is greater than the coverage of the currently camped cell ;
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell. range.
- a measurement method comprising:
- S current -S REF is greater than or equal to the second threshold, updating S REF such that S REF is equal to S current , and S REF is the reference cell state quantity of the currently camped cell;
- the method further includes:
- a message indicating a second threshold or a message indicating a first threshold is received from the network device.
- the method further includes: acquiring S REF after the terminal reselects or selects the currently camped cell.
- the terminal may obtain the S REF from the network device, or may measure the cell state quantity of the currently camped cell at the moment of camping on the currently camped cell, and determine the measured cell state quantity as S REF . It may be that the cell state quantity of the currently camped cell of the latest (or most recent) measurement is determined as S REF before the time of camping on the currently camped cell.
- the cell state quantity includes a signal power RSRP or a signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the method further includes:
- the condition of the cell reselection may be that the coverage of the cell is greater than the coverage of the currently camped cell, and the signal quality or signal power of the cell is greater than the third threshold.
- the method further includes:
- a measurement report is sent to the network device, the measurement report including a signal quality RSRQ or a signal power RSRP of the one or more cells.
- the measurement report may be sent to the network device, so that the network device performs cell handover on the terminal according to the signal quality or signal power of one or more cells included in the measurement report.
- the method further includes:
- the coverage of the one or more cells is greater than the coverage of the currently camped cell ;
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell. range.
- a measurement method comprising:
- the currently camped cell is measured to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , where N is the total number of times the currently camped cell is measured within ⁇ t, and S i is The amount of cell state obtained by the i-th measurement;
- the method further comprises: receiving information indicating the ⁇ t from the network device, or information indicating the first threshold.
- the method further includes: acquiring S REF after the terminal reselects or selects the currently camped cell.
- the terminal may obtain the S REF from the network device, or may measure the cell state quantity of the currently camped cell at the moment of camping on the currently camped cell, and determine the measured cell state quantity as S REF . It may be that the cell state quantity of the currently camped cell of the latest (or most recent) measurement is determined as S REF before the time of camping on the currently camped cell.
- the cell state quantity includes a signal power RSRP or a signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the method further includes:
- the condition of the cell reselection may be that the coverage of the cell is greater than the coverage of the currently camped cell, and the signal quality or signal power of the cell is greater than the third threshold.
- the method further includes:
- a measurement report is sent to the network device, the measurement report including a signal quality RSRQ or a signal power RSRP of the one or more cells.
- the measurement may be sent to the network device, so that the network device performs cell handover on the terminal according to the signal quality or signal power of one or more cells included in the measurement including.
- the method further includes:
- the coverage of the one or more cells is greater than the coverage of the currently camped cell ;
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell. range.
- a measurement method comprising:
- the first duration ⁇ t 1 may be any length of time. In this case, the first duration may not exist, that is, the first duration is optional.
- information indicating the ⁇ t 1 or the first threshold is received from a network device.
- information indicating the ⁇ t 1 may be received only from the network device, or only information indicating the first threshold may be received, or information indicating the ⁇ t 1 and the first threshold may be received.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- t REF is the time of camping to the currently camped cell; or, t REF is an update Moment.
- the method further includes:
- the first timer is started, and the running time of the first timer is a second duration ⁇ t 2 ;
- the currently camped cell is measured to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , and N is the total number of times the currently camped cell is measured within ⁇ t 2 , S i is the amount of cell state obtained by the i-th measurement;
- the coverage of the first cell is greater than the coverage of the currently camped cell
- the method further includes:
- the second cell is the one or more first A first cell in which the signal quality RSRQ or signal power RSRP is greater than or equal to a third threshold.
- the coverage of the first cell is greater than the coverage of the currently camped cell
- the method further includes:
- a measurement report is sent to the network device, the measurement report including a signal quality RSRQ or a signal power RSRP of the one or more first cells.
- the coverage of the first cell is greater than the coverage of the currently camped cell by any one of the following manners:
- the priority of the frequency of the first cell is lower than the priority of the frequency of the currently camped cell
- the priority of the first cell is lower than the priority of the currently camped cell
- the frequency of the first cell is lower than the frequency of the currently camped cell
- the cell type of the first cell is a macro cell, and the cell type of the currently camped cell is a small cell.
- a measurement method comprising:
- the signal quality RSRQ or signal power RSRP of one or more of the neighboring cells of the currently camped cell is measured.
- information indicating the first threshold or the second threshold is received from a network device.
- the information indicating the first threshold may be received only from the network device, or only information indicating the second threshold may be received, or information indicating the first threshold and the second threshold may be received.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- t REF is the time of camping to the currently camped cell; or, t REF is an update Moment.
- the method further includes:
- the first timer is started, and the running time of the first timer is the second duration ⁇ t 2 ;
- the currently camped cell is measured to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , and N is the total number of times the currently camped cell is measured within ⁇ t 2 , S i is the amount of cell state obtained by the i-th measurement;
- the coverage of the first cell is greater than the coverage of the currently camped cell
- the method further includes:
- the second cell is the one or more first A first cell in which the signal quality RSRQ or signal power RSRP is greater than or equal to a third threshold.
- the coverage of the first cell is greater than the coverage of the currently camped cell
- the method further includes:
- a measurement report is sent to the network device, the measurement report including a signal quality RSRQ or a signal power RSRP of the one or more first cells.
- the coverage of the first cell is greater than the coverage of the currently camped cell by any one of the following manners:
- the priority of the frequency of the first cell is lower than the priority of the frequency of the currently camped cell
- the priority of the first cell is lower than the priority of the currently camped cell
- the frequency of the first cell is lower than the frequency of the currently camped cell
- the cell type of the first cell is a macro cell, and the cell type of the currently camped cell is a small cell.
- a measuring device having a function of realizing the behavior of the measuring method in the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect described above.
- the measuring device comprises at least one module for implementing the measuring method provided by the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.
- a measuring apparatus comprising a processor and a memory, wherein the memory is used for storing the supporting measuring apparatus to perform the first aspect, the second aspect, the third aspect, and the fourth aspect Or the program of the measurement method provided by the fifth aspect, and the data involved in implementing the measurement method provided by the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect described above.
- the processor is configured to execute a program stored in the memory.
- the operating device of the storage device may further include a communication bus for establishing a connection between the processor and the memory.
- the memory may be disposed outside the measuring device, that is, the measuring device includes a processor for coupling with the memory, reading instructions in the memory and executing to implement the above aspects.
- the measuring device includes a processor for coupling with the memory, reading instructions in the memory and executing to implement the above aspects.
- a computer readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the first aspect, the second aspect, the third aspect, The measuring method of the fourth aspect or the fifth aspect.
- a computer program product comprising instructions for causing a computer to perform the measurements of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect described above when operating on a computer method.
- the currently camped cell is measured to obtain ⁇ S i
- the terminal when the terminal determines that the amount of the cell state in the ⁇ t is smaller than the state of the reference cell, on the one hand, the terminal can start the measurement on the neighboring cell, and on the other hand, the terminal can set the S REF. Updated to the last measured cell state quantity S N in ⁇ t, such that if the terminal fails to reselect to other cells after measuring the neighboring cell, the current resident can be measured again based on the updated S REF Whether the cell state quantity in the ⁇ t meets the condition, thereby determining whether to start the measurement of the neighboring cell again, compared with the terminal continuously measuring the neighboring cell, reducing the number of times the terminal measures the neighboring cell, and reducing the terminal function. Consumption.
- 1A is a system architecture diagram of a measurement method provided by an embodiment of the present application.
- 1B is a system architecture diagram of another measurement method provided by an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
- FIG. 3 is a flow chart of a measurement method provided by an embodiment of the present application.
- FIG. 5 is a flowchart of a measurement method provided by an embodiment of the present application.
- FIG. 6 is a flow chart of a measurement method provided by an embodiment of the present application.
- FIG. 7 is a block diagram of a measuring device according to an embodiment of the present application.
- FIG. 8 is a block diagram of another measuring device provided by an embodiment of the present application.
- FIG. 9 is a block diagram of another measuring device provided by an embodiment of the present application.
- communication signals are usually covered in the form of cells.
- the cell with a large coverage of the communication signal may be referred to as a macro cell, and the cell with a small coverage of the communication signal may be referred to as a small cell.
- the terminal can reselect the appropriate cell camp by measuring the signal quality of the cell on different frequencies.
- the appropriate terminal can also be used.
- the camped cell is switched by measuring the signal quality of the cells on different frequencies.
- the measurement method provided by the embodiment of the present application can be used for the terminal to perform cell measurement under appropriate conditions, and perform cell reselection or cell handover according to the measurement result.
- the measurement method provided by the embodiment of the present application can be applied to the following specific scenarios.
- the small cell and the macro cell are deployed on different frequencies, and different frequencies are set with different priorities.
- the frequency of the small cell is higher than the priority of the frequency of the macro cell.
- the measurement method provided by the embodiment of the present application may be used to measure the neighboring cell, so as to select a suitable cell to camp according to the measurement result, for example, camping on the macro cell, because the macro cell coverage is large, at the terminal.
- the frequency of replacement of the camped cell by the terminal is decreased compared with the frequency of camping on the small cell to replace the camped cell, and the frequency of updating the camped cell is reduced, and the power consumption of the terminal is reduced.
- the measurement method provided by the embodiment of the present application may be used to measure the neighboring cell, and then pass the measurement.
- the reported measurement result is switched to a suitable cell (for example, camping on the macro cell, because the macro cell coverage is large, in the terminal mobile state, the frequency of the terminal changing the camping cell and the camping to the small cell replacement camping cell
- the frequency of the service will decrease.
- the frequency of replacement of the serving cell is reduced, that is, the switching is reduced, and the power consumption of the terminal is reduced.
- the small cell and the macro cell are deployed on the same frequency, the same frequency is set to have the same priority, and the signal quality or signal power of the small cell is better than the signal quality or signal power of the macro cell.
- the terminal may have a higher signal quality due to the small cell. Reselecting to the small cell, on the basis of this, the terminal frequently replaces the small cell that resides because the small cell coverage is small, and in this process, the measurement is frequently started, and the power consumption of the terminal is increased.
- the measurement method provided by the embodiment of the present application may be used to measure the neighboring cell, so as to select a suitable cell to camp according to the measurement result, for example, camping on the macro cell, because the macro cell coverage is large.
- the frequency of the terminal changing the camping cell is decreased compared with the frequency of camping on the small cell to replace the camping cell, and the frequency of updating the camping cell is reduced, and the power consumption of the terminal is reduced.
- the measurement method provided by the embodiment of the present application may be used to measure the neighboring cell.
- FIG. 1A is a system architecture diagram of a measurement method provided by an embodiment of the present application.
- the base station 101 and the terminal 102 can be included in the system architecture.
- the signal coverage of the base station 101 is a cell corresponding to the base station 101, and the terminal 102 may be an idle state terminal that resides in a cell corresponding to the base station 101, or may be a terminal that has established a communication connection with the base station 101. .
- the base station 101 may be an E-UTRAN Node B (eNB) or a next generation Node B (gNB) in the 5G communication system.
- eNB E-UTRAN Node B
- gNB next generation Node B
- the base station in the foregoing system architecture may be virtual, that is, as shown in FIG. 1B, part of the functions of the base station in the foregoing system architecture may be in a distributed unit.
- the 103 Distributed Unit, DU
- some functions may be in a Centralized Unit (CU) 104, and a base station in each cell may be replaced by a DU 103, and a plurality of DUs 103 may be connected to one CU 104.
- CU Centralized Unit
- FIG. 2 is a schematic structural diagram of a terminal 102 according to an embodiment of the present application.
- the terminal 102 may be a terminal such as a mobile phone, a tablet computer, or the like.
- the terminal 102 mainly includes a transmitter 1021, a receiver 1022, a memory 1023, a processor 1024, and a communication bus 1025. It will be understood by those skilled in the art that the structure of the terminal 102 shown in FIG. 2 does not constitute a limitation of the terminal 102, and may include more or less components than those illustrated, or combine some components, or different component arrangements. This embodiment of the present application does not limit this.
- the transmitter 1021 can be used to send data and/or signaling to the base station 101.
- the receiver 1022 can be configured to receive data and/or signaling, etc., transmitted by the base station 101.
- the memory 1023 can be used to store the data sent by the base station 101, and the memory 1023 can also be used to store one or more running programs and/or modules for performing the measurement method provided by the embodiment of the present application.
- the memory 1023 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), or other information that can store information and instructions.
- EEPROM Electro Scientific Erasable Programmable Read-Only Memory
- CD-ROM Compact Disc Read-Only Memory
- optical disc Storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
- magnetic disk storage media or other magnetic storage devices or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being Any other medium accessed by the integrated circuit, but is not limited thereto.
- Memory 1023 may be present independently and coupled to processor 1024 via communication bus 1025. Memory 1023 can also be integrated with processor 1024.
- the processor 1024 is a control center of the terminal 102, and the processor 1024 can be a general central processing unit (CPU), a microprocessor, and an application-specific integrated circuit (ASIC). , or one or more integrated circuits for controlling the execution of the program of the present scheme.
- the processor 1024 can implement the measurement method provided by the embodiments of the present application by running or executing a software program and/or module stored in the memory 1023 and calling data stored in the memory 1013.
- processor 1024 and the memory 1023 described above can communicate information over the communication bus 1025.
- the embodiment of the present application further provides the structure of the base station 101.
- the base station 101 mainly includes five components: a transmitter, a receiver, a memory, a processor, and a communication bus. It will be understood by those skilled in the art that the above structure of the base station 101 does not constitute a limitation to the base station 101, may include more or less components than the five components, or combine some components, or different component arrangements, this application The embodiment does not limit this.
- the transmitter, the receiver, the memory, the processor, and the communication bus in the base station 101 have substantially the same functions as the transmitter, the receiver, the memory, the processor, and the communication bus in the terminal 102 in FIG. 2, respectively. No longer elaborated.
- the terminal may measure the neighboring cell on the currently camped cell by using the measurement method shown in FIG. 3 or FIG. 4, and then reselect the cell according to the measurement result, and then first introduces the first A method for measuring a terminal in an idle state, as shown in FIG. 3, the method may include the following steps:
- Step 301 The terminal receives information indicating the first duration ⁇ t 1 or the first threshold from the network device.
- the network device may be a base station of a cell where the terminal is currently camped.
- the terminal is in an idle state and does not establish a connection with the base station.
- the base station may broadcast the first time duration ⁇ t 1 or the first threshold.
- the information may be information indicating only ⁇ t 1 , may be information indicating only the first threshold, or may be information indicating ⁇ t 1 and the first threshold.
- the terminal can receive the information broadcast by the base station. It should be noted that, in order to facilitate the subsequent description, the first duration is marked by ⁇ t 1 here.
- this step is an optional step, and the first duration ⁇ t 1 and/or the first threshold may be pre-configured inside the terminal.
- Step 302 The terminal determines the amount of change in the state of the cell in ⁇ t 1 Whether it is greater than or equal to the first threshold.
- the cell state quantity includes signal power RSRP or signal quality RSRQ. That is, Is the signal quality or signal power of the currently camped cell measured by the terminal at time t REF , and Then, the signal quality or signal power of the currently camped cell measured by the terminal when t REF + ⁇ t 1 is That is, the terminal measures the amount of change in signal quality or signal power of the currently camped cell within ⁇ t 1 . among them, May be greater than May also be smaller
- the magnitude of the change in the state of the cell can be characterized by the magnitude of the amount of change in the state of the cell within ⁇ t 1 .
- the reference time t REF may refer to a moment when the terminal camps on the currently camped cell, or may also refer to the terminal update. Moment.
- the terminal measures and records the signal quality or signal power of the currently camped cell at the moment of camping on the currently camped cell, and obtains At the same time, timing is performed from this moment, and after ⁇ t 1 is passed, the terminal again measures the signal quality or signal power of the currently camped cell, and obtains Calculation Absolute value of the difference
- the terminal can be timed by a timer. Specifically, the terminal may start a timer at a time of camping on the currently camped cell, and the running time of the timer is ⁇ t 1 . When the timer runs, the terminal is triggered to measure the signal quality of the currently camped cell again. Or signal power.
- the terminal can be updated from The time starts to count. After ⁇ t 1 , the terminal measures the signal quality or signal power of the currently camped cell again. Calculate the absolute value of the difference between the two
- t REF + ⁇ t 1 may be the time at which the terminal performs the last measurement or the time of the most recent measurement, for example, defined as the current time (Current). The result of the most recent measurement or current time measurement.
- the specific counting manner of the number of changes of the cell in which the terminal resides is exemplified as follows: For example, when the terminal reselects from the cell A to the cell B, the number of changes of the cell in which the terminal resides is 1. If the terminal reselects from cell A to cell B, and then reselects from cell B to cell C, or the terminal reselects from cell A to cell B and reselects from cell B to cell A, the cell in which the terminal resides The number of changes is 2.
- a first threshold may be a signal quality or signal power
- the threshold of the change amount or may be the threshold number of cell changes.
- the terminal may change the amount of signal power or signal quality of the current cell is greater than residing within or by determining the [Delta] t 1 Is equal to the first threshold to determine whether the signal quality or the signal power of the currently camped cell is drastically changed.
- the terminal may perform step 303. Otherwise, the terminal may perform step 305.
- the terminal may determine the terminal by determining whether the number of changes of the cell in ⁇ t 1 is greater than or equal to the first threshold. Whether the frequency of reselecting a cell is high. When the number of changes of the cell in which the terminal is located in the ⁇ t 1 is greater than or equal to the first threshold, the frequency of the terminal reselecting the cell is high. In this case, the terminal may perform step 303. Otherwise, the terminal may perform the step. 305.
- the terminal determines in this step Whether it is greater than or equal to the first threshold is to determine the degree of change of the cell signal or the frequency of the reselection of the cell. Therefore, in a possible implementation manner of the embodiment of the present application, the terminal determines in this step. Whether it is greater than or equal to the first threshold can also be replaced by other implementations.
- the first threshold that is received by the terminal from the network device may be an initial threshold configured by the network device for the terminal, and after receiving the first threshold, the terminal may perform corresponding to the first threshold. Processing, so as to get the processed threshold, the terminal can The threshold value after the processing is compared to determine the degree of change of the cell signal or the frequency of reselecting the cell.
- Step 303 If The controller measures the signal quality RSRQ or the signal power RSRP of one or more first cells in the neighboring cells of the currently camped cell, greater than or equal to the first threshold.
- the signal quality RSRQ is a reference signal received quality (Reference Signal Received Quality), and the signal power RSRP is a reference signal received power (Reference Signal Received Power).
- step 302 If it is determined by step 302 that it is within ⁇ t 1 If the threshold is greater than or equal to the first threshold, it indicates that the cell signal currently camped by the terminal is more severe or the frequency of the terminal reselecting the cell is higher. If the signal of the cell currently camped by the terminal changes sharply, the terminal may not be able to continue working normally again on the currently camped cell. At this time, the terminal may start measuring the neighboring cell. . If the frequency of the terminal reselecting the cell is high, then the terminal changes the cell too frequently. At this time, the terminal can start measurement on the neighboring cell, so as to reselect and camp on a more suitable cell according to the measurement result.
- the terminal may measure the signal quality of the one or more first cells in the neighboring cell, where the frequency of the first cell may be the same as or different from the frequency of the currently camped cell, that is, the neighboring cell includes Co-frequency neighboring cells and/or inter-frequency neighboring cells.
- the terminal can measure the terminal in order to avoid subsequent frequent measurement and reselection of the terminal.
- the first cell may be a cell whose coverage is larger than the currently camped cell. Since the coverage of the first cell is larger than the coverage of the cell currently camped by the terminal, the terminal can reselect the coverage to the coverage of the currently camped cell by measuring the signal quality or signal power of the first cell. On a large cell, in this way, even if the terminal is in a mobile state, in the case of moving the same distance, the signal change will be slower relative to the cell camping on a smaller coverage area, so that the terminal can be relatively reduced in the cell. The measurement and the number of cell reselections based on the measurement result reduce the power consumption of the terminal.
- the neighboring cell of the cell currently camped by the terminal may include both the first cell that is larger than the coverage of the currently camped cell, and the cell that has the same coverage or smaller coverage as the currently camped cell.
- the size of the cell coverage may be represented by the priority of the frequency of each cell, the priority of each cell, the frequency of each cell, or the cell type of each cell.
- the priority of the frequency of the cell when used to represent the size of the cell coverage, the priority of the frequency of the cell with a larger coverage may be set lower, and the frequency of the cell with a smaller coverage may be prioritized.
- the level setting is higher.
- the terminal may receive information indicating the frequency and the priority of the frequency from the network device, such that when the terminal determines When the first threshold is greater than or equal to the first threshold, the first cell with a larger coverage may be selected from the neighboring cells of the currently camped cell according to the priority of the frequency of the cell.
- the terminal may receive, from the network device, configuration information including at least two frequencies (that is, two or more frequencies) and a priority corresponding to each of the at least two frequencies, where the at least two frequencies include the current station The frequency of the cell that remains.
- the terminal may select a frequency of a priority lower than a frequency of a currently camped cell from at least two frequencies, and measure a signal quality of one or more first cells deployed in the selected cell on the selected frequency. Since the lower the priority of the frequency, the coverage of the cell deployed on the corresponding frequency is larger, so that the priority of the frequency selected by the terminal from the at least two frequencies is lower than the priority of the frequency of the currently camped cell. That is, the coverage of the cell deployed on the selected frequency is larger than the coverage of the currently camped cell.
- the terminal measures the cell deployed in the selected cell in the selected frequency, which is actually measuring the neighbor. The first cell in the cell whose coverage is larger than the coverage of the currently camped cell.
- the priority of the cell with a larger coverage may be set lower, and the priority of the cell with a smaller coverage may be set higher.
- the terminal may receive information indicating the priority of the cell from the network device, such that when the terminal determines When the first threshold is greater than or equal to the first threshold, the cell with the lower priority than the currently camped cell may be selected as the first cell, and the lower the priority, the larger the coverage, and the priority of the first cell. It is lower than the priority of the currently camped cell, and therefore, the coverage of the first cell will be larger than the currently camped cell.
- the terminal may receive information indicating the frequency of the cell from the network device, such that when the terminal determines When the first threshold is greater than or equal to the first threshold, the cell whose frequency is lower than the frequency of the currently camped cell may be selected as the first cell, and the lower the frequency, the larger the coverage, and the lower the frequency of the first cell.
- the frequency of the currently camped cell therefore, the coverage of the first cell will be greater than the currently camped cell.
- the cell type of the cell with a larger coverage area may be set as a macro cell, and the cell type of the cell with a smaller coverage area may be set as a small cell.
- the terminal may receive information indicating the cell type of the cell from the network device, such that when the terminal determines When the first threshold is greater than or equal to the first threshold, the cell with the cell type being the macro cell may be selected as the first cell from the neighboring cells.
- the cell with a larger coverage may be deployed on one or more first frequencies, and the first frequency is set.
- the corresponding cell type is a macro cell, and the cell with a smaller coverage is deployed on one or more second frequencies, and the cell type corresponding to the second frequency is set to be a small cell.
- the terminal may receive, from the network device, information including a cell type corresponding to at least two frequencies and each of the at least two frequencies, the at least two frequencies including the frequency of the currently camped cell.
- the terminal may select a corresponding cell type as a frequency of the macro cell from at least two frequencies, and use one or more cells deployed in the selected cell on the selected frequency as the first cell.
- the terminal may also start a first timer, where the running duration of the first timer is a second duration ⁇ t 2 .
- the terminal can continuously measure the currently camped cell and the neighboring cell. If the terminal does not reselect to other cells by measuring the signal of the neighboring cell, it can obtain that the currently camped cell is measured within ⁇ t 2 .
- i are positive integers, i ⁇ N ⁇ , where N is the total number of measurements of the currently camped cell within ⁇ t 2 , and S i is obtained for the ith measurement The amount of cell status.
- any S i in i ⁇ N ⁇ is satisfied. Updated by greater than or equal to the first threshold so that Equal to S N . That is to say, in the embodiment of the present application, the terminal may compare all the cell state quantities measured in ⁇ t 2 with Compare, if all the measured state of the cell is If the absolute value of the difference between the two is greater than or equal to the first threshold, the terminal may Update to make the updated Equal to S N , S N is the last measured cell state quantity in ⁇ t 2 of the first timer operation. Alternatively, the end time of ⁇ t 2 may be referred to as the current time (Current), and then S N is the last measured cell state quantity.
- the terminal can be determined When it is greater than or equal to the first threshold, on the one hand, the measurement of the neighboring cell is started, and on the other hand, the cell state quantity of the currently camped cell within ⁇ t 2 is continuously measured, and the measured cell state quantity and the calculated The difference between the two, so that if the terminal has not successfully reselected to other cells within ⁇ t 2 , then the terminal can be updated by the above method. After that, the terminal can be re-updated to make sure Whether it is greater than or equal to the first threshold, thereby determining whether to start the measurement again, compared to the terminal continuously measuring the neighboring cells, reducing the number of measurements and reducing the power consumption of the terminal.
- the terminal can start the measurement of the neighboring cell by determining the cell state change by using the measurement method introduced in steps 301-303, so that the signal quality of the currently camped cell is changed compared with the prior art.
- a method of measuring a certain threshold which reduces the number of measurements.
- the terminal may further perform cell reselection according to the measurement result by using step 304. In some scenarios, the terminal can reselect to the cell with a larger coverage as much as possible, thereby reducing the number of reselected cells and reducing the power consumption of the terminal.
- Step 304 If there is a cell in which the signal quality or the signal power is greater than or equal to the third threshold in the one or more first cells, the terminal reselects to the second cell, and the second cell is the signal quality in the one or more first cells. Or a first cell whose signal power is greater than or equal to a third threshold.
- the terminal may perform the signal quality or signal power according to the signal quality or signal power of the one or more first cells.
- Cell reselection The terminal may reselect to the cell with the best signal among the one or more first cells.
- the terminal may use, as the second cell, the first cell in the one or more first cells whose signal quality or signal power is greater than or equal to the third threshold, and reselect to the second cell.
- the terminal may use the first cell with the highest signal quality or signal power as the second cell, and reselect the second cell to the second cell. on.
- Step 305 If Less than the first threshold, the terminal re-times at time t REF + ⁇ t 1 , recalculates the amount of change in the cell state quantity, and returns to step 302.
- the terminal can re-time from the current time, that is, the time t REF + ⁇ t 1 , and the t REF is updated to t REF.
- the terminal can measure the cell state quantity again, and calculate the measured cell state quantity and the cell state quantity at time t REF The absolute value of the difference between, get After that, the terminal can return to step 302 to re-compare If the size of the first threshold is greater than or equal to the first threshold, steps 303 and 304 may be performed. If the threshold is smaller than the first threshold, the foregoing process may be repeatedly performed.
- the terminal is determining When it is less than the first threshold, it can also be Updated to And from time t REF + ⁇ t 1 re-timing, at which time t REF is updated to t REF + ⁇ t 1, after passing through the ⁇ t 1, i.e. the time t REF + ⁇ t 1, the terminal may re-measured cell state quantity, and Calculate the measured cell status The amount of cell state at time t REF The absolute value of the difference between, get After that, the terminal can return to step 302 to compare again.
- steps 303 and 304 are performed, and when less than the first threshold, the above process is continued.
- the terminal can perform timing by setting a timer.
- the terminal may further update the first threshold. For example, the terminal may subtract the specified threshold from the first threshold as a new first threshold, and then The amount of change in the state quantity is compared to the updated first threshold.
- the terminal may determine whether the amount of change of the cell state quantity in the first time period is greater than or equal to the first threshold. If the value is greater than or equal to the first threshold, the terminal may measure the neighboring cell in the currently camped cell. Signal quality or signal power of one or more first cells. That is, in the embodiment of the present application, the terminal may determine, according to the magnitude of the change amount of the cell state quantity in the first duration, whether to initiate measurement of the neighboring cell of the currently camped cell, but within the first duration. The amount of change of the cell state quantity actually reflects whether the cell state change is severe.
- the terminal starts the measurement of the neighboring cell when determining that the cell state changes are severe, compared with
- the method for measuring the change of the signal quality of the currently camped cell reaches a certain threshold, that is, the measurement, reduces the number of measurements, and reduces the power consumption of the terminal.
- the one or more first cells measured by the terminal may be a cell whose coverage is larger than the currently camped cell, and then, if the measured signal quality or signal power of the one or more first cells is If there is a cell whose signal quality or signal power is greater than or equal to the third threshold, the terminal may reselect to the second cell, where the second cell is the signal quality or signal power of the one or more first cells that is greater than or equal to the third threshold.
- a first cell is the second cell whose signal quality or signal power of the one or more first cells that is greater than or equal to the third threshold.
- the method includes the following steps:
- Step 401 The terminal receives information indicating a first threshold or a second threshold from the network device.
- the network device may be a base station of a cell where the terminal is currently camped, and the terminal is in an idle state, and does not establish a connection with the base station.
- the base station may broadcast information indicating the first threshold or the second threshold.
- the information may be information indicating only the first threshold, may be information indicating only the second threshold, or may be information indicating the first threshold and the second threshold.
- the terminal can receive the information broadcast by the base station.
- the first threshold may be a threshold of a change in signal quality, a threshold of a change in signal power, or a threshold value of a cell change.
- the second threshold is then the time threshold.
- this step is an optional step, and the first threshold and/or the second threshold may be pre-configured inside the terminal.
- Step 402 If the amount of change ⁇ S of the cell state quantity is greater than or equal to the first threshold, determine whether the duration ⁇ t ⁇ S experienced when the ⁇ S is reached is less than or equal to the second threshold.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- the signal quality RSRQ is a reference signal received quality (Reference Signal Received Quality)
- the signal power RSRP is a reference signal received power (Reference Signal Received Power).
- the terminal may measure the cell state quantity of the currently camped cell once at the reference time t REF
- the terminal can start a timer, after which the terminal can continuously measure the cell state quantity of the currently camped cell, and after each measurement, calculate the currently measured cell state quantity and the cell measured at the reference time t REF .
- the terminal may acquire, by using a timer, from the reference time t REF to the current time (that is, the time when the amount of change of the cell state amount reaches ⁇ S) The elapsed time ⁇ t ⁇ S and determine whether ⁇ t ⁇ S is less than or equal to the second threshold.
- the terminal can measure the cell state quantity after the reference time t REF in real time, so as to acquire the change amount of the cell state quantity in real time, and determine the cell by the elapsed time when the amount of change of the cell state quantity reaches the first threshold.
- the severity of the state change is compared with the amount of cell state measured directly at the end time of a certain time length, and the amount of change of the state of the cell state is calculated, thereby determining the severity of the change of the state of the cell according to the magnitude of the change amount of the state of the cell state. More accurate.
- the reference time t REF may refer to the moment when the terminal camps on the currently camped cell, or may refer to the terminal update. Moment.
- t REF + ⁇ t ⁇ S may be the time at which the terminal performs the last measurement or the time of the most recent measurement, for example, defined as the current time (Current). The result of the most recent measurement or current time measurement.
- the terminal measures and records the signal quality or signal power of the currently camped cell at the moment of camping on the currently camped cell, and obtains At the same time, starting from this moment, the terminal continuously measures the signal quality or signal power of the currently camped cell, and obtains each measurement. At the time, the absolute value ⁇ S of the difference between the two is calculated.
- the terminal can update The time begins with the time as the reference time, and the amount of cell state measured at that time is updated. After that, the terminal continuously measures the signal quality or signal power of the currently camped cell and obtains each measurement. At the time, the absolute value ⁇ S of the difference between the two is calculated.
- the terminal can further determine the time ⁇ t ⁇ S used for the change so large, if ⁇ t ⁇ S is less than or equal to the first
- the second threshold indicates that the cell state changes greatly in a relatively short period of time, that is, the cell state changes are severe. In this case, the terminal may perform step 403. Otherwise, the terminal may perform step 405.
- the first threshold and the second threshold in this step are mainly used to determine whether the cell state change is severe.
- the step may be replaced by other implementation manners.
- the first threshold or the second threshold that is received by the terminal from the network device may be an initial threshold configured by the network device for the terminal, and after receiving the first threshold or the second threshold, the terminal may Performing corresponding processing on the first threshold or the second threshold to obtain a processed threshold, the terminal may compare ⁇ S with the processed first threshold, or compare ⁇ t ⁇ S with the processed threshold to determine the cell Whether the state changes drastically.
- Step 403 Measure the signal quality RSRQ or the signal power RSRP of one or more first cells in the neighboring cells of the currently camped cell if ⁇ t ⁇ S is less than or equal to the second threshold.
- step 402 If it is determined by step 402 that ⁇ t ⁇ S is less than or equal to the second threshold, it indicates that the cell signal currently camped by the terminal changes sharply. In this case, the terminal may not be able to continue working normally again on the currently camped cell. At this time, the terminal can initiate measurement of the neighboring cell to reselect and camp on a more suitable cell according to the measurement result.
- the terminal may measure the signal quality or signal power of one or more first cells in the neighboring cells of the currently camped cell, where the first cell may be the same frequency as the currently camped cell in the neighboring cell or Different communities.
- the first cell may also be a cell whose coverage is greater than the coverage of the cell where the terminal currently camps.
- the specific implementation manner of the terminal measuring one or more first cells in the neighboring cell may refer to the steps in the foregoing embodiment.
- the related implementation manners in 303 are not described in detail in this embodiment of the present application.
- the terminal may further start a first timer, where the running time of the first timer is a second duration ⁇ t 2 , and within ⁇ t 2 , the terminal may The camped cell performs measurement.
- the terminal does not reselect to other cells by measuring the signal of the neighboring cell, the plurality of cell state quantities measured in ⁇ t 2 ⁇ S i
- the terminal may compare all the cell state quantities measured in ⁇ t 2 with Compare, if all the measured state of the cell is If the absolute value of the difference between the two is greater than or equal to the first threshold, the terminal may Update to make the updated Equal to S N , S N is the last measured cell state change amount within ⁇ t 2 of the first timer operation.
- the end time of ⁇ t 2 may be referred to as the current time (Current), and then S N is the last measured cell state quantity.
- the terminal can start the measurement of the neighboring cell by determining the cell state change by using the measurement method introduced in steps 401-403, so that the signal quality of the currently camped cell is changed compared with the prior art.
- a method of measuring a certain threshold which reduces the number of measurements.
- the terminal may perform cell reselection according to the measurement result in step 404, so that the terminal can reselect to the cell with a larger coverage as much as possible, thereby reducing reselection.
- the number of cells reduces the power consumption of the terminal.
- Step 404 If there is a cell in which signal quality or signal power is greater than or equal to a third threshold in one or more first cells, the terminal reselects to the second cell, and the second cell is a signal quality in one or more first cells. Or a first cell whose signal power is greater than or equal to a third threshold.
- step 304 For the specific implementation of this step, reference may be made to the specific implementation in step 304 in the foregoing embodiment, and details are not described herein again.
- the terminal may receive information indicating the first threshold and the second threshold from the network device, and then the terminal may determine whether the amount of change ⁇ S of the cell state quantity is greater than or equal to the first threshold, if ⁇ S is greater than or equal to the first a threshold, the terminal may further determine whether the duration of time when the ⁇ S is reached is less than or equal to the second threshold. If the second threshold is less than or equal to the second threshold, the cell state changes greatly in a short period of time. In this case, the terminal can initiate measurement of the neighboring cell, so that the terminal can reselect and camp on a more suitable cell according to the measurement result.
- the terminal in the present application starts the measurement of the neighboring cell when the cell state changes sharply, the measurement is started as long as the cell state changes greatly, and the number of measurements is reduced. This reduces the number of times the cell is reselected. Further, in the present application, since the cell is reselected to the cell whose coverage is larger than the current camping cell by measuring only the cell with a larger coverage in the neighboring cell, the terminal is moving even when the cell is reselected. In the state, because the cell coverage of the reselected cell is large, the signal quality will not change drastically due to the small distance of the mobile, and the cell measurement or reselection will not be performed frequently, thereby reducing the cell for the terminal. The number of measurements and reselections reduces terminal power consumption.
- the foregoing embodiment mainly introduces a specific implementation process for a terminal in an idle state, where the terminal measures a neighboring cell on a currently camped cell, and then reselects to another cell according to the measurement result, and for the connected terminal, Since the terminal has established a communication connection with the base station of the currently camped cell, the terminal can measure the neighboring cell by using the two measurement methods shown in FIG. 5 or FIG. 6, and report the measurement result from the currently camped cell. Switch to another cell.
- the measurement method of the first connected state terminal is first introduced. As shown in FIG. 5, the method includes the following steps:
- Step 501 The terminal receives information indicating the first duration ⁇ t 1 or the first threshold from the network device.
- the network device may be a base station of a cell where the terminal is currently camped, and the terminal is in a connected state, that is, the terminal establishes a communication connection with the base station of the currently camped cell.
- the base station may The terminal transmits information indicating the first duration or the first threshold.
- the terminal may receive information sent by the base station indicating the first duration or the first threshold.
- this step is an optional step, and the first duration ⁇ t 1 and/or the first threshold may be pre-configured inside the terminal.
- Step 502 The terminal determines the amount of change in the state quantity of the ⁇ t 1 cell Whether it is greater than or equal to the first threshold.
- step 302 For the specific implementation of this step, reference may be made to step 302, and details are not described herein again.
- Step 503 If The controller measures the signal quality RSRQ or the signal power RSRP of one or more first cells in the neighboring cells of the currently camped cell, greater than or equal to the first threshold.
- the first cell may be a cell in the neighboring cell that has the same or different frequency as the currently camped cell.
- the first cell may also be the coverage of the neighboring cell than the currently camped cell.
- a large area of the community may also be the coverage of the neighboring cell than the currently camped cell.
- step 303 For the specific implementation of this step, reference may be made to step 303, and details are not described herein again.
- Step 504 The terminal sends a measurement report to the base station, where the measurement report includes signal quality or signal power of one or more first cells.
- the terminal may send a measurement report to the base station, where the measurement report may include a signal of each of the first cells in the one or more first cells. Quality or signal power.
- the coverage of the first cell is larger than that of the currently camped cell, so that the terminal directly
- the base station reports the signal quality or the signal power of the first cell, so that the base station can directly switch to the first cell with a larger coverage according to the signal quality of the first cell, thereby avoiding that the terminal always switches to the coverage during the mobile process. Frequent measurement, reporting, and handover caused by a small-area cell reduces power consumption of the terminal and reduces signaling overhead between the terminal and the base station.
- the terminal may not report the signal quality or signal power of each first cell, but may selectively report the signal. Signal quality or signal power of a portion of one or more of the first cells.
- the terminal may select one or more first cells of the first cell to report the higher quality of the first cell. Specifically, the terminal may select a signal quality or a signal power greater than a third threshold from the signal quality or signal power of the one or more first cells for reporting. In this way, if the coverage of the first cell is larger than the coverage of the currently camped cell, the base station can be directly switched to the first cell with a large coverage and good signal quality or signal power.
- Step 505 When the base station receives the measurement report sent by the terminal, the base station determines the second cell according to the signal quality or signal power of the one or more first cells included in the measurement report, and sends a first message to the terminal, where the first message is sent. And configured to indicate that the terminal switches to the second cell, where the second cell is one of the one or more first cells.
- the second cell may be determined according to the signal quality or signal power of the one or more first cells included in the measurement report.
- the base station may also determine the second cell in different manners according to different measurement reports sent by the terminal.
- the measurement report reported by the terminal includes signal quality or signal power of each first cell in one or more first cells, in this case, the base station
- the first cell with the signal quality or the signal power greater than or equal to the third threshold may be selected from the one or more first cells as the second cell, and if there are multiple first cells with the signal quality or the signal power greater than the third threshold, The second cell in which the signal quality or the signal power is the highest is selected.
- the measurement report reported by the terminal includes the signal quality or signal power of the first cell in which the signal quality or the signal power in the first cell is greater than or equal to the third threshold.
- the base station may The first cell with the highest signal quality or signal power is selected as the second cell.
- the base station may send a first message to the terminal, where the first message is used to indicate that the terminal switches from the currently camped cell to the second cell.
- the base station when performing cell handover, the base station considers many factors, and sometimes the base station may not perform cell handover by using the measurement report reported by the terminal, so this step is an optional step.
- Step 506 The terminal receives the first message from the base station, and switches to the second cell according to the first message.
- Step 507 If Less than the first threshold, the terminal re-times at time t REF + ⁇ t 1 , recalculates the amount of change in the cell state quantity, and returns to step 502.
- step 305 For the specific implementation of this step, reference may be made to the specific implementation in step 305, and details are not described herein again.
- the terminal may determine the amount of change of the cell state in ⁇ t 1 Whether it is greater than or equal to the first threshold, if The greater than or equal to the first threshold, the terminal may directly measure the signal quality or signal power of one or more of the neighboring cells of the currently camped cell. Afterwards, the terminal may send a measurement report to the base station according to the signal quality or signal power of the one or more first cells, so that the base station sends, according to the measurement report, a first message for indicating that the terminal switches to the second cell, where the second cell It is a first cell in one or more first cells.
- the terminal measures the signal of the neighboring cell.
- the quality or the signal power is reported to the base station.
- the terminal measures and reports the base station, which reduces the number of measurements and reduces the number of times the terminal reports the base station, thereby saving signaling. Overhead.
- the terminal can directly measure the signal quality of the first cell with a large coverage and report it to the base station, so that the base station can directly switch the terminal to a larger coverage area according to the reported signal quality or signal power.
- the cell in this way, when the terminal moves, it will not cause a drastic change in signal quality due to moving a small distance, and naturally, cell measurement or handover is not performed frequently, thereby further reducing the cell measurement and the terminal.
- the number of handovers reduces the power consumption of the terminal, and at the same time, reduces the number of times the signal quality is reported by the terminal, thereby reducing signaling overhead.
- the method includes the following steps:
- Step 601 The terminal receives information indicating the first threshold or the second threshold from the network device.
- the network device may be a base station of a cell where the terminal is currently camped, and the terminal is in a connected state, that is, the terminal establishes a communication connection with the base station of the currently camped cell.
- the base station may The terminal transmits information indicating a first threshold or a second threshold.
- the terminal may receive information sent by the base station indicating the first threshold or the second threshold.
- this step is an optional step, and the first threshold and/or the second threshold may be pre-configured inside the terminal.
- Step 602 If the amount of change ⁇ S of the cell state quantity is greater than or equal to the first threshold, determine whether the duration ⁇ t ⁇ S experienced when the ⁇ S is reached is less than or equal to the second threshold.
- step 402 For the specific implementation of this step, reference may be made to step 402, and details are not described herein again.
- Step 603 If ⁇ t ⁇ S is less than or equal to the second threshold, measure signal quality RSRQ or signal power RSRP of one or more first cells in the neighboring cell of the currently camped cell.
- the first cell may be a cell in the neighboring cell that has the same or different frequency as the currently camped cell.
- the first cell may also be the coverage of the neighboring cell than the currently camped cell.
- a large area of the community may also be the coverage of the neighboring cell than the currently camped cell.
- step 403 For the specific implementation of this step, reference may be made to step 403, and details are not described herein again.
- Step 604 The terminal sends a measurement report to the base station, where the measurement report includes signal quality RSRQ or signal power RSRP of the one or more first cells.
- Step 605 When the base station receives the measurement report sent by the terminal, the base station determines the second cell according to the signal quality or signal power of the one or more first cells included in the measurement report, and sends a first message to the terminal, where the first message is sent. And configured to indicate that the terminal switches to the second cell, where the second cell is one of the one or more first cells.
- the base station when performing cell handover, the base station considers many factors, and sometimes the base station may not perform cell handover by using the measurement report reported by the terminal, so this step is an optional step.
- Step 606 The terminal receives the first message from the base station, and switches to the second cell according to the first message.
- the terminal may determine whether the amount of change ⁇ S of the cell state quantity is greater than or equal to the first threshold. If ⁇ S is greater than or equal to the first threshold, the terminal may further determine whether the duration experienced by reaching ⁇ S is less than or It is equal to the second threshold. If it is less than or equal to the second threshold, it indicates that the cell state changes greatly in a short time. In this case, the terminal can initiate measurement on the neighboring cell. The terminal may send a measurement report to the base station according to the measured signal quality or signal power of the one or more first cells, so that the base station sends, according to the measurement report, a first message for instructing the terminal to switch to the second cell, where The second cell is a first one of the one or more first cells.
- the terminal measures the signal quality of the neighboring cell. Or the signal power is reported to the base station.
- the terminal measures and reports the base station, which reduces the number of measurements and reduces the number of times the terminal reports the base station, thereby saving signaling overhead.
- the terminal can directly measure the signal quality of the first cell with a large coverage, and report the signal to the base station, so that the base station can directly switch the terminal to the cell with a larger coverage according to the reported signal quality.
- the signal quality does not change drastically due to moving a small distance, and naturally, cell measurement or handover is not performed frequently, thereby further reducing the number of times the terminal performs cell measurement and handover.
- the power consumption of the terminal is reduced, and at the same time, the number of times the signal quality is reported by the terminal is reduced, thereby reducing the signaling overhead.
- the terminal may start measuring the currently camped cell at the moment of camping on the currently camped cell, and determine the measured cell state quantity as S REF , and the terminal is in the ⁇ t time.
- the currently camped cell performs continuous measurement, resulting in ⁇ S i
- the terminal may calculate S REF -S i every time the S i is obtained, and determine whether S REF -S i is greater than or equal to the first threshold, or the terminal may calculate S i -S REF and determine S Whether i -S REF is less than or equal to the first threshold. That is, in the present application, the expression of the same AB can be replaced by BA.
- the terminal may update S REF at the end of ⁇ t, so that S REF is equal to the last measured value S N within ⁇ t and the measurement of the neighboring cell is initiated so that the terminal can reselect or switch to the cell with better signal.
- the foregoing S REF may also be the signal quality or signal power of the currently camped cell measured by the terminal at other times, or may be camped on the currently camped cell.
- the cell state quantity of the currently camped cell that is the latest (or most recently) measured is determined as S REF , which is not specifically limited in this embodiment of the present application.
- the time at which the terminal measures the S N may be the current time (Current), and the S N is the current cell state quantity or the most recently measured cell state quantity.
- the currently camped cell may also be referred to as a serving cell, and the reference cell state quantity is a reference cell state quantity or a reference value of a cell state quantity, and the pair of currently camped
- the measurement by neighboring cells of the cell also includes measuring the same frequency and/or different frequency.
- the terminal when the terminal determines that the cell state quantity in ⁇ t is smaller than the reference cell state quantity, on the one hand, the terminal can start measurement on the neighboring cell, and on the other hand, the terminal can update S REF to ⁇ t.
- the last measured cell state quantity S N such that if the terminal fails to reselect to other cells after measuring the neighboring cell, the current camped cell can be measured again within ⁇ t based on the updated S REF Whether the cell state quantity satisfies the condition, thereby determining whether to start the measurement of the neighboring cell again, compared with the terminal continuously measuring the neighboring cell, reducing the number of times the terminal measures the neighboring cell, and reducing the terminal power consumption.
- the second mode measuring the currently camped cell to obtain the current cell state quantity S current ; if S current -S REF is greater than or equal to the second threshold, updating S REF such that S REF is equal to S current , S REF is The reference cell state quantity of the currently camped cell; wherein, if S REF -S current is greater than or equal to the first threshold, the neighboring cell of the currently camped cell is measured.
- the terminal may compare the measured cell state quantity S current with the reference state quantity S REF of the currently camped cell after each measurement of the cell state quantity, if S current —S REF is greater than or If the second threshold is equal to the second threshold, it indicates that the amount of increase of the cell state quantity has reached the second threshold, that is, the signal power or signal quality of the currently camped cell does not decrease.
- the terminal does not have to The neighbor cell is measured, but S REF is updated to S current , and then the cell state quantity of the currently camped cell is continuously measured and compared with the updated S REF to improve the signal quality of the currently camped cell.
- the measurement of the neighboring cell is started in time.
- the terminal can initiate measurement of the neighboring cell of the currently camped cell, so that the terminal can reselect or switch the cell according to the measurement result.
- the current cell state quantity S current is the current value of the current (Current) cell state quantity or cell state quantity or the latest value of the cell state quantity or the last measurement value of the cell state quantity.
- the terminal can compare the measured cell state quantity with the reference cell state quantity in real time, and start the measurement of the neighboring cell in time when the cell state quantity change amount reaches the threshold, thereby enabling the terminal to be in the cell.
- Cell reselection or handover is performed more timely when the signal is degraded.
- the third way within ⁇ t, the currently camped cell is measured to obtain ⁇ S i
- the average value of ⁇ N ⁇ , S REF is the reference cell state quantity of the currently camped cell; wherein, if S REF —S i is greater than or equal to the first threshold, the neighboring cell of the currently camped cell is measured.
- the terminal may measure the cell state quantity S REF of the currently camped cell when camping on the currently camped cell, and the terminal continuously measures the currently camped cell in the ⁇ t time, thereby obtaining ⁇ S i
- i is a positive integer, i ⁇ N ⁇ .
- the terminal saves N S i , wherein the terminal can save the current terminal ⁇ S 1 , S 2 , S 3 ... S N-1 , S when each measurement obtains a new S i (denoted as S N+1 ).
- N ⁇ is replaced by ⁇ S 2 , S 3 ... S N-1 , S N , S N+1 ⁇ to obtain new ⁇ S 1 , S 2 , S 3 ...
- the terminal may also calculate S REF -S i , if ⁇ S i
- the neighboring cell may be measured by referring to the related measurement manner of the neighboring cell introduced in the foregoing embodiment.
- the signal quality or the signal power, and the cell reselection or switching is performed according to the measured signal quality or signal power of the neighboring cell according to the method of reselecting or switching the cell, which is described in the foregoing embodiment. Let me repeat.
- FIG. 7 is a block diagram of an apparatus for reselecting a cell according to an embodiment of the present disclosure.
- the apparatus is applied to a terminal.
- the apparatus 700 includes a first measurement module 701, an update module 702, and a second measurement module. 703.
- the first measurement module 701 is configured to measure the currently camped cell within ⁇ t to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , where N is a measurement of the currently camped cell within ⁇ t
- S i is the amount of cell state obtained by the ith measurement;
- the updating module 702 is configured to update S REF such that S REF is equal to S N if S S i
- REF is the reference cell state quantity of the currently camped cell;
- the second measurement module 703 is configured to measure a neighboring cell of the currently camped cell if S REF —S i is greater than or equal to the first threshold.
- the device further includes:
- a receiving module configured to receive, from the network device, information for indicating ⁇ t, or for indicating information of the first threshold.
- the device further includes:
- the acquisition module is configured to acquire S REF after reselecting or selecting to the currently camped cell.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the device further includes:
- the reselection module is configured to reselect to the first cell if the first cell in the neighboring cell satisfies the condition of cell reselection.
- the device further includes:
- a sending module configured to send a measurement report to the network device, where the measurement report includes a signal quality RSRQ or a signal power RSRP of one or more cells.
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell.
- FIG. 8 is a block diagram of an apparatus for reselecting a cell according to an embodiment of the present disclosure.
- the apparatus is applied to a terminal.
- the apparatus 800 includes a first measurement module 801, an update module 802, and a second measurement module. 803.
- the first measurement module 801 is configured to perform measurement on the currently camped cell to obtain a current cell state quantity S current ;
- the updating module 802 is configured to: if S current -S REF is greater than or equal to the second threshold, update S REF such that S REF is equal to S current , and S REF is a reference cell state quantity of the currently camped cell;
- the second measurement module 803 is configured to measure a neighboring cell of the currently camped cell if S REF —S current is greater than or equal to the first threshold.
- the device further includes:
- a receiving module configured to receive, from the network device, information used to indicate a first threshold, or information used to indicate a second threshold.
- the device further includes:
- the acquisition module is configured to acquire S REF after reselecting or selecting to the currently camped cell.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the device further includes:
- the reselection module is configured to reselect to the first cell if the first cell in the neighboring cell satisfies the condition of cell reselection.
- the device further includes:
- a sending module configured to send a measurement report to the network device, where the measurement report includes a signal quality RSRQ or a signal power RSRP of one or more cells.
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell.
- FIG. 9 is a block diagram of an apparatus for reselecting a cell according to an embodiment of the present application.
- the apparatus is applied to a terminal.
- the apparatus 900 includes a first measurement module 901, an update module 902, and a second measurement module. 903.
- the first measurement module 901 is configured to measure the currently camped cell within ⁇ t to obtain ⁇ S i
- i is a positive integer, i ⁇ N ⁇ , and N is a measurement of the currently camped cell within ⁇ t.
- the total number of times, S i is the amount of cell state obtained by the ith measurement;
- the updating module 902 is configured to update S REF such that S REF is equal to ⁇ S i
- the second measurement module 903 is configured to measure a neighboring cell of the currently camped cell if S REF —S i is greater than or equal to the first threshold.
- the device further includes:
- a receiving module configured to receive, from the network device, information for indicating ⁇ t, or for indicating information of the first threshold.
- the device further includes:
- the acquisition module is configured to acquire S REF after reselecting or selecting to the currently camped cell.
- the cell state quantity includes signal power RSRP or signal quality RSRQ.
- the coverage of one or more cells in the neighboring cell is greater than the coverage of the currently camped cell.
- the device further includes:
- the reselection module is configured to reselect to the first cell if the first cell in the neighboring cell satisfies the condition of cell reselection.
- the device further includes:
- a sending module configured to send a measurement report to the network device, where the measurement report includes a signal quality RSRQ or a signal power RSRP of one or more cells.
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of the one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell
- the coverage of one or more cells is greater than the coverage of the currently camped cell.
- the embodiment of the present application further provides a corresponding communication device.
- the structure of the communication device can be referred to FIG. 2 and related description.
- the communication device can include a processor or can also include a memory.
- the processor is operative to couple with a memory to read and execute instructions in the memory to implement the methods of the above embodiments.
- the measuring device provided by the foregoing embodiment is only illustrated by the division of each functional module in the cell measurement. In actual applications, the function allocation may be completed by different functional modules according to requirements, that is, the internal structure of the device is divided. Different functional modules to complete all or part of the functions described above.
- the measurement device provided by the foregoing embodiment is the same as the embodiment of the measurement method in the foregoing embodiment, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example: coaxial cable, fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website, computer, server or data center.
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a Digital Versatile Disc (DVD)), or a semiconductor medium (for example, a Solid State Disk (SSD)). Wait.
- a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
- an optical medium for example, a Digital Versatile Disc (DVD)
- DVD Digital Versatile Disc
- SSD Solid State Disk
- a computer readable storage medium which, when run on a computer, causes the computer to perform the steps of the measurement method provided in the foregoing embodiments.
- a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
- the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
Description
Claims (12)
- 一种测量方法,其特征在于,所述方法包括:在Δt内,对当前驻留的小区进行测量,以获得{S i|i为正整数,i≤N},N为Δt内对所述当前驻留的小区进行测量的总次数,S i为第i次测量获得的小区状态量;若{S i|i为正整数,i≤N}中任意S i满足S REF-S i大于或等于所述第一阈值,则更新S REF以使S REF等于S N,S REF为所述当前驻留的小区的参考小区状态量;其中,若S REF-S i大于或等于所述第一阈值,对所述当前驻留的小区的相邻小区进行测量。
- 一种测量方法,其特征在于,所述方法包括:对当前驻留的小区进行测量以获得当前小区状态量S current;若S current-S REF大于或等于第二阈值,则更新S REF以使S REF等于S current,S REF为所述当前驻留的小区的参考小区状态量;其中,若S REF-S current大于或等于所述第一阈值,对所述当前驻留的小区的相邻小区进行测量。
- 一种测量方法,其特征在于,所述方法包括:在Δt内,对当前驻留的小区进行测量,以获得{S i|i为正整数,i≤N},N为Δt内对所述当前驻留的小区进行测量的总次数,S i为第i次测量获得的小区状态量;更新S REF以使S REF等于{S i|i为正整数,i≤N}中的最大值或等于{S i|i为正整数,i≤N}的平均值,S REF为所述当前驻留的小区的参考小区状态量;其中,若S REF-S i大于或等于第一阈值,对所述当前驻留的小区的相邻小区进行测量。
- 根据权利要求1-3任一所述的方法,其特征在于,还包括:从网络设备接收用于指示Δt的信息,或者用于指示所述第一阈值的信息,或者用于指示所述第二阈值的信息。
- 根据权利要求1-4任一所述的方法,其特征在于,还包括:在重选到或选择到所述当前驻留的小区后,获取S REF。
- 根据权利要求1-5任一所述的方法,其特征在于,所述小区状态量包括信号功率RSRP 或信号质量RSRQ。
- 根据权利要求1-6任一所述的方法,其特征在于,所述相邻小区中的一个或多个小区的覆盖范围大于所述当前驻留的小区的覆盖范围。
- 根据权利要求7所述的方法,其特征在于,还包括:若所述相邻小区中的第一小区满足小区重选的条件,重选到所述第一小区。
- 根据权利要求7或8所述的方法,其特征在于,还包括:向网络设备发送测量报告,所述测量报告包括所述一个或多个小区的信号质量RSRQ或信号功率RSRP。
- 根据权利要求7-9任一所述的方法,其特征在于,若所述一个或多个小区的频率的优先级低于所述当前驻留的小区的频率的优先级,则所述一个或多个小区的覆盖范围大于所述当前驻留的小区的覆盖范围;或者,若所述一个或多个小区的优先级低于所述当前驻留的小区的优先级,则所述一个或多个小区的覆盖范围大于所述当前驻留的小区的覆盖范围;或者,若所述一个或多个小区的频率低于所述当前驻留的小区的频率,则所述一个或多个小区的覆盖范围大于所述当前驻留的小区的覆盖范围;或者,若所述一个或多个小区的小区类型为宏小区,所述当前驻留的小区的小区类型为小小区,则所述一个或多个小区的覆盖范围大于所述当前驻留的小区的覆盖范围。
- 一种通信装置,其特征在于,包括:处理器,用于与存储器耦合,读取所述存储器中的指令并执行所述指令以实现如权利要求1-10任一所述的方法。
- 根据权利要求11所述的装置,其特征在于,还包括:所述存储器。
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BR112020016285A2 (pt) | 2020-12-15 |
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